$ git clone -n https://src.fedoraproject.org/rpms/kf5-kmailtransport.git /var/lib/mock/f38-build-729616-101821/root/chroot_tmpdir/scmroot/kf5-kmailtransport
Cloning into '/var/lib/mock/f38-build-729616-101821/root/chroot_tmpdir/scmroot/kf5-kmailtransport'...
$ git fetch origin 64acfad2051defe9da33effc6d6367e74f523a43:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kf5-kmailtransport
 * [new ref]         64acfad2051defe9da33effc6d6367e74f523a43 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 64acfad 23.04.2