$ git clone -n https://src.fedoraproject.org/rpms/vte291.git /var/lib/mock/f42-build-3426649-45197/root/chroot_tmpdir/scmroot/vte291
Cloning into '/var/lib/mock/f42-build-3426649-45197/root/chroot_tmpdir/scmroot/vte291'...
$ git fetch origin 106262ca769b00592d32ce98a80fa91a24a887f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/vte291
 * [new ref]         106262ca769b00592d32ce98a80fa91a24a887f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 106262c Update to 0.80.0