$ git clone -n https://src.fedoraproject.org/rpms/rgbds.git /var/lib/mock/f45-build-34503-687/root/chroot_tmpdir/scmroot/rgbds
Cloning into '/var/lib/mock/f45-build-34503-687/root/chroot_tmpdir/scmroot/rgbds'...
$ git fetch origin 53396d0d63951e9c87e3e5ca8f13e235a2efb116:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rgbds
 * [new ref]         53396d0d63951e9c87e3e5ca8f13e235a2efb116 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 53396d0 Update to v1.0.3 (rhbz#2510048)