$ git clone -n https://src.fedoraproject.org/rpms/openxr.git /var/lib/mock/f45-build-21150-579/root/chroot_tmpdir/scmroot/openxr
Cloning into '/var/lib/mock/f45-build-21150-579/root/chroot_tmpdir/scmroot/openxr'...
$ git fetch origin 2edfe274b878274f5ca4ed2eba6c2e2f9fe47262:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/openxr
 * [new ref]         2edfe274b878274f5ca4ed2eba6c2e2f9fe47262 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2edfe27 Update to 1.1.63 upstream release