$ git clone -n https://src.fedoraproject.org/rpms/jd.git /var/lib/mock/f39-build-2245731-53789/root/chroot_tmpdir/scmroot/jd
Cloning into '/var/lib/mock/f39-build-2245731-53789/root/chroot_tmpdir/scmroot/jd'...
$ git fetch origin 658268b60d2231b0ae1b1359e21d6566a0dc1a54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jd
 * [new ref]         658268b60d2231b0ae1b1359e21d6566a0dc1a54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 658268b 0.11.0