$ git clone -n https://src.fedoraproject.org/rpms/golang.git /var/lib/mock/f40-build-2639458-66361/root/chroot_tmpdir/scmroot/golang
Cloning into '/var/lib/mock/f40-build-2639458-66361/root/chroot_tmpdir/scmroot/golang'...
$ git fetch origin 636bf2bd562fd362edf54e173927be0de149dd72:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang
 * [new ref]         636bf2bd562fd362edf54e173927be0de149dd72 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 636bf2b Fix build on riscv64