$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-YAML-Meta.git /var/lib/mock/f45-build-26925-620/root/chroot_tmpdir/scmroot/perl-Test-YAML-Meta
Cloning into '/var/lib/mock/f45-build-26925-620/root/chroot_tmpdir/scmroot/perl-Test-YAML-Meta'...
$ git fetch origin fc11b9d70ca2300d015f094f6cf95c5226c0d3a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-YAML-Meta
 * [new ref]         fc11b9d70ca2300d015f094f6cf95c5226c0d3a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc11b9d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild