$ git clone -n https://src.fedoraproject.org/rpms/ghc-HsOpenSSL-x509-system.git /var/lib/mock/f45-build-9904-411/root/chroot_tmpdir/scmroot/ghc-HsOpenSSL-x509-system
Cloning into '/var/lib/mock/f45-build-9904-411/root/chroot_tmpdir/scmroot/ghc-HsOpenSSL-x509-system'...
$ git fetch origin 715feb6d5321a673529f14a087183fb67c74f168:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ghc-HsOpenSSL-x509-system
 * [new ref]         715feb6d5321a673529f14a087183fb67c74f168 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 715feb6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild