$ git clone -n https://src.fedoraproject.org/rpms/snapshot.git /var/lib/mock/f42-build-3273602-41312/root/chroot_tmpdir/scmroot/snapshot
Cloning into '/var/lib/mock/f42-build-3273602-41312/root/chroot_tmpdir/scmroot/snapshot'...
$ git fetch origin 33255cd4acd46595a85846f67cae3a11cd7b9810:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/snapshot
 * [new ref]         33255cd4acd46595a85846f67cae3a11cd7b9810 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 33255cd Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild