$ git clone -n https://src.fedoraproject.org/rpms/perl-TheSchwartz.git /var/lib/mock/f45-build-27139-621/root/chroot_tmpdir/scmroot/perl-TheSchwartz
Cloning into '/var/lib/mock/f45-build-27139-621/root/chroot_tmpdir/scmroot/perl-TheSchwartz'...
$ git fetch origin 179b9dbadfef2394958812db4d0bb7eacf9962da:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-TheSchwartz
 * [new ref]         179b9dbadfef2394958812db4d0bb7eacf9962da -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 179b9db Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild