$ git clone -n https://src.fedoraproject.org/rpms/gensio.git /var/lib/mock/f39-build-1543299-36552/root/chroot_tmpdir/scmroot/gensio
Cloning into '/var/lib/mock/f39-build-1543299-36552/root/chroot_tmpdir/scmroot/gensio'...
$ git fetch origin d496f51a5bc2da80957e9ea144b87c349356e432:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gensio
 * [new ref]         d496f51a5bc2da80957e9ea144b87c349356e432 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d496f51 update to 2.7.5