$ git clone -n https://src.fedoraproject.org/rpms/mpfr.git /var/lib/mock/f42-build-side-1-3499006-45964/root/chroot_tmpdir/scmroot/mpfr
Cloning into '/var/lib/mock/f42-build-side-1-3499006-45964/root/chroot_tmpdir/scmroot/mpfr'...
$ git fetch origin d9e96fd5fb057d5f894d5e5eddf0e59e18f032e0:KOJI_FETCH_HEAD
fatal: unable to access 'https://src.fedoraproject.org/rpms/mpfr.git/': OpenSSL SSL_connect: SSL_ERROR_SYSCALL in connection to src.fedoraproject.org:443 
$ git reset --hard d9e96fd5fb057d5f894d5e5eddf0e59e18f032e0
HEAD is now at d9e96fd Update to MPFR 4.2.2