$ git clone -n https://src.fedoraproject.org/rpms/kf5-kmailtransport.git /var/lib/mock/f40-build-743668-111339/root/chroot_tmpdir/scmroot/kf5-kmailtransport
Cloning into '/var/lib/mock/f40-build-743668-111339/root/chroot_tmpdir/scmroot/kf5-kmailtransport'...
$ git fetch origin ee6d7ed8e4c18c51298a06e2996c67dcd90c0538:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kmailtransport
 * [new ref]         ee6d7ed8e4c18c51298a06e2996c67dcd90c0538 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ee6d7ed 23.08.2