$ git clone -n https://src.fedoraproject.org/rpms/golang-modernc-lexer.git /var/lib/mock/f40-build-2582746-62396/root/chroot_tmpdir/scmroot/golang-modernc-lexer
Cloning into '/var/lib/mock/f40-build-2582746-62396/root/chroot_tmpdir/scmroot/golang-modernc-lexer'...
$ git fetch origin 42279dc174cd8511a659ba5304a1e0eee3aed015:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-modernc-lexer
 * [new ref]         42279dc174cd8511a659ba5304a1e0eee3aed015 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 42279dc Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild