$ git clone -n https://src.fedoraproject.org/rpms/golang.git /var/lib/mock/f41-build-812375-147819/root/chroot_tmpdir/scmroot/golang
Cloning into '/var/lib/mock/f41-build-812375-147819/root/chroot_tmpdir/scmroot/golang'...
$ git fetch origin a867bd88a656c1d6e91e7b18bab696dc3fcf1e77:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang
 * [new ref]         a867bd88a656c1d6e91e7b18bab696dc3fcf1e77 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a867bd8 Default to ld.bfd on ARM64