$ git clone -n https://src.fedoraproject.org/rpms/perl-Math-BigInt-GMP.git /var/lib/mock/f40-build-779232-130260/root/chroot_tmpdir/scmroot/perl-Math-BigInt-GMP
Cloning into '/var/lib/mock/f40-build-779232-130260/root/chroot_tmpdir/scmroot/perl-Math-BigInt-GMP'...
$ git fetch origin 7e439f1b5ecfd6aed3ef91720206236921bf4d47:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Math-BigInt-GMP
 * [new ref]         7e439f1b5ecfd6aed3ef91720206236921bf4d47 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 7e439f1 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild