$ git clone -n https://src.fedoraproject.org/rpms/perl-POE-Test-Loops.git /var/lib/mock/f45-build-25612-612/root/chroot_tmpdir/scmroot/perl-POE-Test-Loops
Cloning into '/var/lib/mock/f45-build-25612-612/root/chroot_tmpdir/scmroot/perl-POE-Test-Loops'...
$ git fetch origin 79b232b8f806f511602d2591a8168fb6d4d889ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-POE-Test-Loops
 * [new ref]         79b232b8f806f511602d2591a8168fb6d4d889ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 79b232b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild