$ git clone -n https://src.fedoraproject.org/rpms/kf5-kross.git /var/lib/mock/f38-build-729643-101821/root/chroot_tmpdir/scmroot/kf5-kross
Cloning into '/var/lib/mock/f38-build-729643-101821/root/chroot_tmpdir/scmroot/kf5-kross'...
$ git fetch origin d88c42920d5a47d074936b0d8100e24ad7375138:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kross
 * [new ref]         d88c42920d5a47d074936b0d8100e24ad7375138 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d88c429 5.107.0