$ git clone -n https://src.fedoraproject.org/rpms/clang11.0.git /var/lib/mock/f41-build-side-1-3089436-39245/root/chroot_tmpdir/scmroot/clang11.0
Cloning into '/var/lib/mock/f41-build-side-1-3089436-39245/root/chroot_tmpdir/scmroot/clang11.0'...
$ git fetch origin 9707a2a1cd102e51ac39a5410380cf4aeacfcb3a:KOJI_FETCH_HEAD
fatal: unable to access 'https://src.fedoraproject.org/rpms/clang11.0.git/': OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to src.fedoraproject.org:443 
$ git reset --hard 9707a2a1cd102e51ac39a5410380cf4aeacfcb3a
HEAD is now at 9707a2a Added the README