$ git clone -n https://src.fedoraproject.org/rpms/xpa.git /var/lib/mock/f45-build-39052-731/root/chroot_tmpdir/scmroot/xpa
Cloning into '/var/lib/mock/f45-build-39052-731/root/chroot_tmpdir/scmroot/xpa'...
$ git fetch origin 3931bdb4bbb705fef9b2b4e8099d03fe86cf4748:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xpa
 * [new ref]         3931bdb4bbb705fef9b2b4e8099d03fe86cf4748 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3931bdb Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild