I have the same issue. Some investigations:
1. I decided to find out the particular command that fails and added more debug print: diff --git a/bootstrap b/bootstrap index 7523f65b4..44c21db23 100755 --- a/bootstrap +++ b/bootstrap @@ -749,6 +749,7 @@ download_po_files() { domain=$2 echo "$me: getting translations into $subdir for $domain..." cmd=$(printf "$po_download_command_format" "$subdir" "$domain") + echo "$me: going to exec \"$cmd\"..." eval "$cmd" } 2. Tried to run: $ ./bootstrap ./bootstrap: Bootstrapping from checked-out coreutils sources... ./bootstrap: consider installing git-merge-changelog from gnulib ./bootstrap: getting gnulib files... ./bootstrap: getting translations into po/.reference for coreutils... ./bootstrap: going to exec "wget --mirror --level=1 -nd -nv -A.po -P 'po/.reference' https://translationproject.org/latest/coreutils/"... ERROR: The certificate of 'translationproject.org' is not trusted. ERROR: The certificate of 'translationproject.org' doesn't have a known issuer. 3. Tried to run the command directly, but without `-nv` flag: $ wget --mirror --level=1 -nd -v -A.po -P 'po/.reference' https://translationproject.org/latest/coreutils/ --2021-02-13 14:23:35-- https://translationproject.org/latest/coreutils/ Loaded CA certificate '/etc/ssl/certs/ca-certificates.crt' Resolving translationproject.org (translationproject.org)... 80.69.83.146, 2a01:7c8:c037:6::20 Connecting to translationproject.org (translationproject.org)|80.69.83.146|:443... connected. ERROR: The certificate of ‘translationproject.org’ is not trusted. ERROR: The certificate of ‘translationproject.org’ doesn't have a known issuer. 4. Tried the same with curl: $ curl -v https://translationproject.org/latest/coreutils/ -o /dev/null % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0* Trying 80.69.83.146:443... * Connected to translationproject.org (80.69.83.146) port 443 (#0) * ALPN, offering h2 * ALPN, offering http/1.1 * successfully set certificate verify locations: * CAfile: /etc/ssl/certs/ca-certificates.crt * CApath: none } [5 bytes data] * TLSv1.3 (OUT), TLS handshake, Client hello (1): } [512 bytes data] * TLSv1.3 (IN), TLS handshake, Server hello (2): { [93 bytes data] * TLSv1.2 (IN), TLS handshake, Certificate (11): { [6723 bytes data] * TLSv1.2 (IN), TLS handshake, Server key exchange (12): { [589 bytes data] * TLSv1.2 (IN), TLS handshake, Server finished (14): { [4 bytes data] * TLSv1.2 (OUT), TLS handshake, Client key exchange (16): } [70 bytes data] * TLSv1.2 (OUT), TLS change cipher, Change cipher spec (1): } [1 bytes data] * TLSv1.2 (OUT), TLS handshake, Finished (20): } [16 bytes data] * TLSv1.2 (IN), TLS handshake, Finished (20): { [16 bytes data] * SSL connection using TLSv1.2 / ECDHE-RSA-AES128-GCM-SHA256 * ALPN, server did not agree to a protocol * Server certificate: * subject: CN=stats.vrijschrift.org * start date: Dec 31 10:34:41 2020 GMT * expire date: Mar 31 10:34:41 2021 GMT * subjectAltName: host "translationproject.org" matched cert's "translationproject.org" * issuer: C=US; O=Let's Encrypt; CN=R3 * SSL certificate verify ok. } [5 bytes data] > GET /latest/coreutils/ HTTP/1.1 > Host: translationproject.org > User-Agent: curl/7.75.0 > Accept: */* > { [5 bytes data] * Mark bundle as not supporting multiuse < HTTP/1.1 200 OK < Date: Sat, 13 Feb 2021 12:26:00 GMT < Server: Apache/2.4.10 (Debian) < Vary: Accept-Encoding < Transfer-Encoding: chunked < Content-Type: text/html;charset=UTF-8 < { [5 bytes data] 100 8881 0 8881 0 0 16980 0 --:--:-- --:--:-- --:--:-- 16980 * Connection #0 to host translationproject.org left intact 5. Trying to export and verify the cert with certtools: $ certtool --verbose --verify-profile=high --verify --infile=/tmp/ stats.vrijschrift.org Loaded system trust (139 CAs available) Subject: CN=R3,O=Let's Encrypt,C=US Issuer: CN=DST Root CA X3,O=Digital Signature Trust Co. Signature algorithm: RSA-SHA256 Output: Not verified. The certificate is NOT trusted. The certificate issuer is unknown. Subject: CN=R3,O=Let's Encrypt,C=US Issuer: CN=DST Root CA X3,O=Digital Signature Trust Co. Signature algorithm: RSA-SHA256 Output: Not verified. The certificate is NOT trusted. The certificate issuer is unknown. Subject: CN=R3,O=Let's Encrypt,C=US Issuer: CN=DST Root CA X3,O=Digital Signature Trust Co. Checked against: CN=DST Root CA X3,O=Digital Signature Trust Co. Signature algorithm: RSA-SHA256 Output: Verified. The certificate is trusted. Subject: CN=stats.vrijschrift.org Issuer: CN=R3,O=Let's Encrypt,C=US Checked against: CN=R3,O=Let's Encrypt,C=US Signature algorithm: RSA-SHA256 Output: Verified. The certificate is trusted. Chain verification output: Verified. The certificate is trusted. Maybe that "Output: Not verified. The certificate is NOT trusted. The certificate issuer is unknown." Is the issue? Thanks! Best regards, Grigorii