$ git clone -n https://src.fedoraproject.org/rpms/gcin.git /var/lib/mock/f40-build-1626313-24118/root/chroot_tmpdir/scmroot/gcin
Cloning into '/var/lib/mock/f40-build-1626313-24118/root/chroot_tmpdir/scmroot/gcin'...
$ git fetch origin a0de1fe971796a620a536bfcd67a404572892ff7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gcin
 * [new ref]         a0de1fe971796a620a536bfcd67a404572892ff7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a0de1fe Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild