$ git clone -n https://src.fedoraproject.org/rpms/open-amp.git /var/lib/mock/f45-build-20955-576/root/chroot_tmpdir/scmroot/open-amp
Cloning into '/var/lib/mock/f45-build-20955-576/root/chroot_tmpdir/scmroot/open-amp'...
$ git fetch origin 51d2a5dd9fbe6739a331c5fe4cc8d703085079af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/open-amp
 * [new ref]         51d2a5dd9fbe6739a331c5fe4cc8d703085079af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 51d2a5d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild