$ git clone -n https://src.fedoraproject.org/rpms/polly.git /var/lib/mock/f39-build-2110508-50654/root/chroot_tmpdir/scmroot/polly
Cloning into '/var/lib/mock/f39-build-2110508-50654/root/chroot_tmpdir/scmroot/polly'...
$ git fetch origin 1f01d594c34c53ea71f6227ca1b96c78c5ead3ce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/polly
 * [new ref]         1f01d594c34c53ea71f6227ca1b96c78c5ead3ce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f01d59 Update to LLVM 17.0.6