$ git clone -n https://src.fedoraproject.org/rpms/perl-Class-Mix.git /var/lib/mock/f39-build-1527843-36177/root/chroot_tmpdir/scmroot/perl-Class-Mix
Cloning into '/var/lib/mock/f39-build-1527843-36177/root/chroot_tmpdir/scmroot/perl-Class-Mix'...
$ git fetch origin e5bdb49a79e2b1eb5ffb550ef71eea454d69e285:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Class-Mix
 * [new ref]         e5bdb49a79e2b1eb5ffb550ef71eea454d69e285 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at e5bdb49 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild