$ git clone -n https://github.com/xcp-ng-rpms/edk2.git /var/lib/mock/v8.3-u-prebuild-9289-28062/root/chroot_tmpdir/scmroot/edk2
Cloning into '/var/lib/mock/v8.3-u-prebuild-9289-28062/root/chroot_tmpdir/scmroot/edk2'...
$ git fetch origin d53ec3e1c6bb02baf061d5df038d3b8722b66871:KOJI_FETCH_HEAD
From https://github.com/xcp-ng-rpms/edk2
 * [new ref]         d53ec3e1c6bb02baf061d5df038d3b8722b66871 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d53ec3e bump release for test build