$ git clone -n https://src.fedoraproject.org/rpms/fmit.git /var/lib/mock/f40-build-1996618-44039/root/chroot_tmpdir/scmroot/fmit
Cloning into '/var/lib/mock/f40-build-1996618-44039/root/chroot_tmpdir/scmroot/fmit'...
$ git fetch origin eb802dcd91f9c82e72dbd3ac6bb6a5f60d25b183:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/fmit
 * [new ref]         eb802dcd91f9c82e72dbd3ac6bb6a5f60d25b183 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eb802dc Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild