$ git clone -n https://src.fedoraproject.org/rpms/kompare.git /var/lib/mock/f42-build-3419625-45162/root/chroot_tmpdir/scmroot/kompare
Cloning into '/var/lib/mock/f42-build-3419625-45162/root/chroot_tmpdir/scmroot/kompare'...
$ git fetch origin 4c79e3554095756d70cbbf5bd494d0f62430009f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kompare
 * [new ref]         4c79e3554095756d70cbbf5bd494d0f62430009f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4c79e35 24.12.3