$ git clone -n https://src.fedoraproject.org/rpms/kf5-mailimporter.git /var/lib/mock/f39-test-2571274-62244/root/chroot_tmpdir/scmroot/kf5-mailimporter
Cloning into '/var/lib/mock/f39-test-2571274-62244/root/chroot_tmpdir/scmroot/kf5-mailimporter'...
$ git fetch origin c3e8f0c08dcafff492e80e094cb1e74e90304b0f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-mailimporter
 * [new ref]         c3e8f0c08dcafff492e80e094cb1e74e90304b0f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c3e8f0c 23.08.5