$ git clone -n https://src.fedoraproject.org/rpms/brotli.git /var/lib/mock/f39-build-1443022-32530/root/chroot_tmpdir/scmroot/brotli
Cloning into '/var/lib/mock/f39-build-1443022-32530/root/chroot_tmpdir/scmroot/brotli'...
$ git fetch origin e4c30f3cc21d3631ca74d0d6879ce56eb3356098:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/brotli
 * [new ref]         e4c30f3cc21d3631ca74d0d6879ce56eb3356098 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e4c30f3 update to 1.1.0 rhbz#2233368