$ git clone -n https://src.fedoraproject.org/rpms/4ti2.git /var/lib/mock/f40-build-800825-143641/root/chroot_tmpdir/scmroot/4ti2
Cloning into '/var/lib/mock/f40-build-800825-143641/root/chroot_tmpdir/scmroot/4ti2'...
$ git fetch origin 4d10bff2f36e698d72ec8ef24d6bb5208fb5b608:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/4ti2
 * [new ref]         4d10bff2f36e698d72ec8ef24d6bb5208fb5b608 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4d10bff Stop building for 32-bit x86