$ git clone -n https://src.fedoraproject.org/rpms/perl-Crypt-OpenSSL-X509.git /var/lib/mock/f45-build-22637-593/root/chroot_tmpdir/scmroot/perl-Crypt-OpenSSL-X509
Cloning into '/var/lib/mock/f45-build-22637-593/root/chroot_tmpdir/scmroot/perl-Crypt-OpenSSL-X509'...
$ git fetch origin bbc4a6e65e2336927c26278aa48e9f7788aadd9c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Crypt-OpenSSL-X509
 * [new ref]         bbc4a6e65e2336927c26278aa48e9f7788aadd9c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bbc4a6e Update to 2.1.5 (RHBZ#2512792)