$ git clone -n https://src.fedoraproject.org/rpms/kf5-kontactinterface.git /var/lib/mock/f39-build-1647249-40434/root/chroot_tmpdir/scmroot/kf5-kontactinterface
Cloning into '/var/lib/mock/f39-build-1647249-40434/root/chroot_tmpdir/scmroot/kf5-kontactinterface'...
$ git fetch origin 46af8f0c38834d96ce7bb41cb0442a9dde664a10:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kontactinterface
 * [new ref]         46af8f0c38834d96ce7bb41cb0442a9dde664a10 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 46af8f0 23.08.2