$ git clone -n https://src.fedoraproject.org/rpms/perl-Sub-Prototype.git /var/lib/mock/f40-build-779174-130216/root/chroot_tmpdir/scmroot/perl-Sub-Prototype
Cloning into '/var/lib/mock/f40-build-779174-130216/root/chroot_tmpdir/scmroot/perl-Sub-Prototype'...
$ git fetch origin 5fe8f07abf939503fd2d8449eeafd54254698f1a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sub-Prototype
 * [new ref]         5fe8f07abf939503fd2d8449eeafd54254698f1a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5fe8f07 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild