$ git clone -n https://src.fedoraproject.org/rpms/libkkc.git /var/lib/mock/f39-build-1563199-37476/root/chroot_tmpdir/scmroot/libkkc
Cloning into '/var/lib/mock/f39-build-1563199-37476/root/chroot_tmpdir/scmroot/libkkc'...
$ git fetch origin fd467b8386f695febf80711a9a7a82aaae77cd54:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libkkc
 * [new ref]         fd467b8386f695febf80711a9a7a82aaae77cd54 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fd467b8 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild