$ git clone -n https://src.fedoraproject.org/rpms/perl-Carp.git /var/lib/mock/f40-build-2620459-64681/root/chroot_tmpdir/scmroot/perl-Carp
Cloning into '/var/lib/mock/f40-build-2620459-64681/root/chroot_tmpdir/scmroot/perl-Carp'...
$ git fetch origin 4ab8a92934f55e84eef3997892b1d3141513809d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Carp
 * [new ref]         4ab8a92934f55e84eef3997892b1d3141513809d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4ab8a92 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild