$ git clone -n https://src.fedoraproject.org/rpms/kiwi.git /var/lib/mock/f39-build-2171537-51044/root/chroot_tmpdir/scmroot/kiwi
Cloning into '/var/lib/mock/f39-build-2171537-51044/root/chroot_tmpdir/scmroot/kiwi'...
$ git fetch origin 11f3e2c3ff576e36e0ea5a3a26278ceaffffdc6f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kiwi
 * [new ref]         11f3e2c3ff576e36e0ea5a3a26278ceaffffdc6f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 11f3e2c Backport fix for detecting setfiles properly