$ git clone -n https://src.fedoraproject.org/rpms/libfabric.git /var/lib/mock/f45-build-16136-483/root/chroot_tmpdir/scmroot/libfabric
Cloning into '/var/lib/mock/f45-build-16136-483/root/chroot_tmpdir/scmroot/libfabric'...
$ git fetch origin d77458f5f555772ac3c97df79df836a8d2a0a017:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libfabric
 * [new ref]         d77458f5f555772ac3c97df79df836a8d2a0a017 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d77458f Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild