$ git clone -n https://src.fedoraproject.org/rpms/perl-Text-Diff-Parser.git /var/lib/mock/f45-build-26963-620/root/chroot_tmpdir/scmroot/perl-Text-Diff-Parser
Cloning into '/var/lib/mock/f45-build-26963-620/root/chroot_tmpdir/scmroot/perl-Text-Diff-Parser'...
$ git fetch origin b180a6d5b8377cadb62160c6040ea00d101dc840:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Text-Diff-Parser
 * [new ref]         b180a6d5b8377cadb62160c6040ea00d101dc840 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b180a6d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild