$ git clone -n https://src.fedoraproject.org/rpms/kf6-kimageformats.git /var/lib/mock/f40-build-2296531-56394/root/chroot_tmpdir/scmroot/kf6-kimageformats
Cloning into '/var/lib/mock/f40-build-2296531-56394/root/chroot_tmpdir/scmroot/kf6-kimageformats'...
$ git fetch origin 283d7cf59ee8cca8acd0468a0cc31f80df242cfd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf6-kimageformats
 * [new ref]         283d7cf59ee8cca8acd0468a0cc31f80df242cfd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 283d7cf Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild