$ git clone -n https://src.fedoraproject.org/rpms/radare2.git /var/lib/mock/f41-build-1188988-22177/root/chroot_tmpdir/scmroot/radare2
Cloning into '/var/lib/mock/f41-build-1188988-22177/root/chroot_tmpdir/scmroot/radare2'...
$ git fetch origin 22caa02c41a9ebeab9f01b5eecc93ef09b71928d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/radare2
 * [new ref]         22caa02c41a9ebeab9f01b5eecc93ef09b71928d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22caa02 cosmetics