$ git clone -n https://src.fedoraproject.org/rpms/perl-Devel-Refcount.git /var/lib/mock/f40-build-779180-130218/root/chroot_tmpdir/scmroot/perl-Devel-Refcount
Cloning into '/var/lib/mock/f40-build-779180-130218/root/chroot_tmpdir/scmroot/perl-Devel-Refcount'...
$ git fetch origin c7f5b9d6dd1049aa02dc82747f0fab5e89d2b28d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Devel-Refcount
 * [new ref]         c7f5b9d6dd1049aa02dc82747f0fab5e89d2b28d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7f5b9d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild