$ git clone -n https://src.fedoraproject.org/rpms/binutils.git /var/lib/mock/f41-build-861802-170387/root/chroot_tmpdir/scmroot/binutils
Cloning into '/var/lib/mock/f41-build-861802-170387/root/chroot_tmpdir/scmroot/binutils'...
$ git fetch origin 056dc6ee1df1c8da76be567a52b1b39f9a19ddd3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/binutils
 * [new ref]         056dc6ee1df1c8da76be567a52b1b39f9a19ddd3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 056dc6e Fix linker testsuite failures