$ git clone -n https://src.fedoraproject.org/rpms/tintin.git /var/lib/mock/f39-build-1579261-38016/root/chroot_tmpdir/scmroot/tintin
Cloning into '/var/lib/mock/f39-build-1579261-38016/root/chroot_tmpdir/scmroot/tintin'...
$ git fetch origin 47735f57c7e8658a253242d471a0e1e7ac2b77b8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tintin
 * [new ref]         47735f57c7e8658a253242d471a0e1e7ac2b77b8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 47735f5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild