$ git clone -n https://src.fedoraproject.org/rpms/ga.git /var/lib/mock/f41-build-814161-148916/root/chroot_tmpdir/scmroot/ga
Cloning into '/var/lib/mock/f41-build-814161-148916/root/chroot_tmpdir/scmroot/ga'...
$ git fetch origin ea9fa4518e06ada2b39bd7b397e8c34ef0c0c9a6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/ga
 * [new ref]         ea9fa4518e06ada2b39bd7b397e8c34ef0c0c9a6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea9fa45 Use make macros