$ git clone -n https://src.fedoraproject.org/rpms/proxygen.git /var/lib/mock/f41-build-1023978-18174/root/chroot_tmpdir/scmroot/proxygen
Cloning into '/var/lib/mock/f41-build-1023978-18174/root/chroot_tmpdir/scmroot/proxygen'...
$ git fetch origin b6924f439b1605a1baf0fc15bc3a6cacc54aca9d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/proxygen
 * [new ref]         b6924f439b1605a1baf0fc15bc3a6cacc54aca9d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b6924f4 Update to 2024.02.19.00