$ git clone -n https://src.fedoraproject.org/rpms/ser2net.git /var/lib/mock/f41-build-852639-166433/root/chroot_tmpdir/scmroot/ser2net
Cloning into '/var/lib/mock/f41-build-852639-166433/root/chroot_tmpdir/scmroot/ser2net'...
$ git fetch origin 8ea61bcd5339f32ee1919fa352e883eff74fd13c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ser2net
 * [new ref]         8ea61bcd5339f32ee1919fa352e883eff74fd13c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8ea61bc rebuild for gensio 2.8.9