$ git clone -n https://src.fedoraproject.org/rpms/golang-uber-ratelimit.git /var/lib/mock/f40-build-2111092-50658/root/chroot_tmpdir/scmroot/golang-uber-ratelimit
Cloning into '/var/lib/mock/f40-build-2111092-50658/root/chroot_tmpdir/scmroot/golang-uber-ratelimit'...
$ git fetch origin 72d5381c77bb31f2e5702b5e3133427d85941a0c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-uber-ratelimit
 * [new ref]         72d5381c77bb31f2e5702b5e3133427d85941a0c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 72d5381 Fix check conditional