$ git clone -n https://src.fedoraproject.org/rpms/nodejs-diagnostic-language-server.git /var/lib/mock/f40-build-2220574-52665/root/chroot_tmpdir/scmroot/nodejs-diagnostic-language-server
Cloning into '/var/lib/mock/f40-build-2220574-52665/root/chroot_tmpdir/scmroot/nodejs-diagnostic-language-server'...
$ git fetch origin b04be8bd49d1032bf29110a9510d5d784345c4d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/nodejs-diagnostic-language-server
 * [new ref]         b04be8bd49d1032bf29110a9510d5d784345c4d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b04be8b Fix BR for nodejs-npm