$ git clone -n https://src.fedoraproject.org/rpms/jsonrpc-glib.git /var/lib/mock/f40-build-2600857-63160/root/chroot_tmpdir/scmroot/jsonrpc-glib
Cloning into '/var/lib/mock/f40-build-2600857-63160/root/chroot_tmpdir/scmroot/jsonrpc-glib'...
$ git fetch origin ef3361bcbfc7d0aec1c1cfa75d75df0322a76bfe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/jsonrpc-glib
 * [new ref]         ef3361bcbfc7d0aec1c1cfa75d75df0322a76bfe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ef3361b Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild