$ git clone -n https://src.fedoraproject.org/rpms/python-libpagure.git /var/lib/mock/f45-build-31381-652/root/chroot_tmpdir/scmroot/python-libpagure
Cloning into '/var/lib/mock/f45-build-31381-652/root/chroot_tmpdir/scmroot/python-libpagure'...
$ git fetch origin ad4d8b6e948e4417b9cb23949ef6e76f1c972c6d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-libpagure
 * [new ref]         ad4d8b6e948e4417b9cb23949ef6e76f1c972c6d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ad4d8b6 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild