$ git clone -n https://src.fedoraproject.org/rpms/buildah.git /var/lib/mock/f41-build-side-1-3126696-39525/root/chroot_tmpdir/scmroot/buildah
Cloning into '/var/lib/mock/f41-build-side-1-3126696-39525/root/chroot_tmpdir/scmroot/buildah'...
$ git fetch origin d4fefc17f712f182f78dbc15af731bbe078ed3be:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/buildah
 * [new ref]         d4fefc17f712f182f78dbc15af731bbe078ed3be -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4fefc1 tests: set new inet helper path