$ git clone -n https://src.fedoraproject.org/rpms/perl-Guard.git /var/lib/mock/f40-build-732009-104588/root/chroot_tmpdir/scmroot/perl-Guard
Cloning into '/var/lib/mock/f40-build-732009-104588/root/chroot_tmpdir/scmroot/perl-Guard'...
$ git fetch origin 4a02090e6c0cbd91958e7fc30e8d976bbc4f8c55:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Guard
 * [new ref]         4a02090e6c0cbd91958e7fc30e8d976bbc4f8c55 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4a02090 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild