$ git clone -n https://src.fedoraproject.org/rpms/gap-pkg-smallsemi.git /var/lib/mock/f41-build-side-1-2951860-35498/root/chroot_tmpdir/scmroot/gap-pkg-smallsemi
Cloning into '/var/lib/mock/f41-build-side-1-2951860-35498/root/chroot_tmpdir/scmroot/gap-pkg-smallsemi'...
$ git fetch origin 34c2a90e119c3b31e494f30ba69c8f3683854c9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gap-pkg-smallsemi
 * [new ref]         34c2a90e119c3b31e494f30ba69c8f3683854c9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 34c2a90 Version 0.7.1