$ git clone -n https://src.fedoraproject.org/rpms/radeontop.git /var/lib/mock/f42-build-side-1-3583404-46888/root/chroot_tmpdir/scmroot/radeontop
Cloning into '/var/lib/mock/f42-build-side-1-3583404-46888/root/chroot_tmpdir/scmroot/radeontop'...
$ git fetch origin 7954f1a3f5d0c8e52968a031688a5dab6238bad1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/radeontop
 * [new ref]         7954f1a3f5d0c8e52968a031688a5dab6238bad1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7954f1a Switch to rpmautospec format