$ git clone -n https://src.fedoraproject.org/rpms/tth.git /var/lib/mock/f39-build-1524183-36027/root/chroot_tmpdir/scmroot/tth
Cloning into '/var/lib/mock/f39-build-1524183-36027/root/chroot_tmpdir/scmroot/tth'...
$ git fetch origin 06f949e7c72d23fe57ae56a5e2d718bfe253e673:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tth
 * [new ref]         06f949e7c72d23fe57ae56a5e2d718bfe253e673 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 06f949e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild