$ git clone -n https://src.fedoraproject.org/rpms/objfw.git /var/lib/mock/f39-build-2467240-61444/root/chroot_tmpdir/scmroot/objfw
Cloning into '/var/lib/mock/f39-build-2467240-61444/root/chroot_tmpdir/scmroot/objfw'...
$ git fetch origin c1e04527f41f85da48538cb2bea36e424231c33e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/objfw
 * [new ref]         c1e04527f41f85da48538cb2bea36e424231c33e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c1e0452 Merge branch 'main' into f39