$ git clone -n https://src.fedoraproject.org/rpms/perl-Sys-Syscall.git /var/lib/mock/f40-build-2300129-56697/root/chroot_tmpdir/scmroot/perl-Sys-Syscall
Cloning into '/var/lib/mock/f40-build-2300129-56697/root/chroot_tmpdir/scmroot/perl-Sys-Syscall'...
$ git fetch origin 00f2ea1bd1a2b40584aebcd560b91483808aee24:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Sys-Syscall
 * [new ref]         00f2ea1bd1a2b40584aebcd560b91483808aee24 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 00f2ea1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild