$ git clone -n https://src.fedoraproject.org/rpms/mrpt.git /var/lib/mock/f39-build-2455645-61439/root/chroot_tmpdir/scmroot/mrpt
Cloning into '/var/lib/mock/f39-build-2455645-61439/root/chroot_tmpdir/scmroot/mrpt'...
$ git fetch origin ccbdd66599f47001c640d0e04f2b41acedf5cd41:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mrpt
 * [new ref]         ccbdd66599f47001c640d0e04f2b41acedf5cd41 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ccbdd66 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild