$ git clone -n https://src.fedoraproject.org/rpms/linux-system-roles.git /var/lib/mock/f42-build-59200056-6571813/root/chroot_tmpdir/scmroot/linux-system-roles
Cloning into '/var/lib/mock/f42-build-59200056-6571813/root/chroot_tmpdir/scmroot/linux-system-roles'...
$ git fetch origin da263e4effd0b66f9d1f376217c4b2c69bbbedf5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/linux-system-roles
 * [new ref]         da263e4effd0b66f9d1f376217c4b2c69bbbedf5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at da263e4 Update to 1.97.1 upstream release