$ git clone -n https://src.fedoraproject.org/rpms/binutils.git /var/lib/mock/f40-build-730330-102679/root/chroot_tmpdir/scmroot/binutils
Cloning into '/var/lib/mock/f40-build-730330-102679/root/chroot_tmpdir/scmroot/binutils'...
$ git fetch origin 88b4953e8b52be89962acc2dac58f2dbcbae07bd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/binutils
 * [new ref]         88b4953e8b52be89962acc2dac58f2dbcbae07bd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 88b4953  Fix the GOLD linker's handling of 32-bit PowerPC binaries.  (#2234396)