$ git clone -n https://src.fedoraproject.org/rpms/arm-none-eabi-binutils-cs.git /var/lib/mock/f40-build-2586098-62427/root/chroot_tmpdir/scmroot/arm-none-eabi-binutils-cs
Cloning into '/var/lib/mock/f40-build-2586098-62427/root/chroot_tmpdir/scmroot/arm-none-eabi-binutils-cs'...
$ git fetch origin 5a67b264e18ce59dd193ddff8575a7923de909f8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/arm-none-eabi-binutils-cs
 * [new ref]         5a67b264e18ce59dd193ddff8575a7923de909f8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5a67b26 drop i686 build as ppl-devel.i686 is no longer available