$ git clone -n https://src.fedoraproject.org/rpms/expatpp.git /var/lib/mock/f41-build-side-1-2635057-26094/root/chroot_tmpdir/scmroot/expatpp
Cloning into '/var/lib/mock/f41-build-side-1-2635057-26094/root/chroot_tmpdir/scmroot/expatpp'...
$ git fetch origin 401b005482207f62e16c3009dd2b58833cd01372:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/expatpp
 * [new ref]         401b005482207f62e16c3009dd2b58833cd01372 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 401b005 convert license to SPDX