$ git clone -n https://src.fedoraproject.org/rpms/golang-github-mattn-xmlrpc.git /var/lib/mock/f39-build-1442948-32523/root/chroot_tmpdir/scmroot/golang-github-mattn-xmlrpc
Cloning into '/var/lib/mock/f39-build-1442948-32523/root/chroot_tmpdir/scmroot/golang-github-mattn-xmlrpc'...
$ git fetch origin 9b4ba387984210b97b6a860c140878f68915804b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-mattn-xmlrpc
 * [new ref]         9b4ba387984210b97b6a860c140878f68915804b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9b4ba38 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild