$ git clone -n https://src.fedoraproject.org/rpms/golang-github-mattn-xmlrpc.git /var/lib/mock/f40-build-2447057-61338/root/chroot_tmpdir/scmroot/golang-github-mattn-xmlrpc
Cloning into '/var/lib/mock/f40-build-2447057-61338/root/chroot_tmpdir/scmroot/golang-github-mattn-xmlrpc'...
$ git fetch origin 6997314c2839c6a3ed905963c185d55c2cd384cb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-mattn-xmlrpc
 * [new ref]         6997314c2839c6a3ed905963c185d55c2cd384cb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6997314 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild