$ git clone -n https://src.fedoraproject.org/rpms/jbigkit.git /var/lib/mock/f40-build-2291986-56091/root/chroot_tmpdir/scmroot/jbigkit
Cloning into '/var/lib/mock/f40-build-2291986-56091/root/chroot_tmpdir/scmroot/jbigkit'...
$ git fetch origin 5f5844b754912d2eead50532a430765db7c7c9e8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jbigkit
 * [new ref]         5f5844b754912d2eead50532a430765db7c7c9e8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5f5844b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild