$ git clone -n https://src.fedoraproject.org/rpms/python-xyzservices.git /var/lib/mock/f45-build-33836-674/root/chroot_tmpdir/scmroot/python-xyzservices
Cloning into '/var/lib/mock/f45-build-33836-674/root/chroot_tmpdir/scmroot/python-xyzservices'...
$ git fetch origin 2bf5f8b5f23cd36627086d727746a4934281c927:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-xyzservices
 * [new ref]         2bf5f8b5f23cd36627086d727746a4934281c927 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2bf5f8b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild