$ git clone -n https://src.fedoraproject.org/rpms/libloc.git /var/lib/mock/f39-build-1575689-37938/root/chroot_tmpdir/scmroot/libloc
Cloning into '/var/lib/mock/f39-build-1575689-37938/root/chroot_tmpdir/scmroot/libloc'...
$ git fetch origin 679e0872c5a5a8ab441703cb32002d713b967695:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libloc
 * [new ref]         679e0872c5a5a8ab441703cb32002d713b967695 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 679e087 0.9.17 bump