$ git clone -n https://src.fedoraproject.org/rpms/perl-Alien-LibGumbo.git /var/lib/mock/f40-build-2301299-56773/root/chroot_tmpdir/scmroot/perl-Alien-LibGumbo
Cloning into '/var/lib/mock/f40-build-2301299-56773/root/chroot_tmpdir/scmroot/perl-Alien-LibGumbo'...
$ git fetch origin cb611e348a546ae062e00a13946e5f87addfce6e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Alien-LibGumbo
 * [new ref]         cb611e348a546ae062e00a13946e5f87addfce6e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cb611e3 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild