$ git clone -n https://src.fedoraproject.org/rpms/libksysguard.git /var/lib/mock/f40-build-2146924-50889/root/chroot_tmpdir/scmroot/libksysguard
Cloning into '/var/lib/mock/f40-build-2146924-50889/root/chroot_tmpdir/scmroot/libksysguard'...
$ git fetch origin 29b8b6228765bb0ed820a24fa82cd720ebb11f3c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libksysguard
 * [new ref]         29b8b6228765bb0ed820a24fa82cd720ebb11f3c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 29b8b62 5.91.0