$ git clone -n https://src.fedoraproject.org/rpms/parallel-hashmap.git /var/lib/mock/f45-build-21390-584/root/chroot_tmpdir/scmroot/parallel-hashmap
Cloning into '/var/lib/mock/f45-build-21390-584/root/chroot_tmpdir/scmroot/parallel-hashmap'...
$ git fetch origin 89c44278ed856e2bd5a9d6dd387cc8d6a7539cd2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/parallel-hashmap
 * [new ref]         89c44278ed856e2bd5a9d6dd387cc8d6a7539cd2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 89c4427 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild