$ git clone -n https://src.fedoraproject.org/rpms/perl-Scalar-String.git /var/lib/mock/f40-build-778995-130140/root/chroot_tmpdir/scmroot/perl-Scalar-String
Cloning into '/var/lib/mock/f40-build-778995-130140/root/chroot_tmpdir/scmroot/perl-Scalar-String'...
$ git fetch origin dd38059a1fe05f4dd81e5cd14d3edfb2f8c32c65:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Scalar-String
 * [new ref]         dd38059a1fe05f4dd81e5cd14d3edfb2f8c32c65 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd38059 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild