$ git clone -n https://src.fedoraproject.org/rpms/perl-DateTime-Calendar-Julian.git /var/lib/mock/f39-build-1433654-31882/root/chroot_tmpdir/scmroot/perl-DateTime-Calendar-Julian
Cloning into '/var/lib/mock/f39-build-1433654-31882/root/chroot_tmpdir/scmroot/perl-DateTime-Calendar-Julian'...
$ git fetch origin 3b9043e270bb8f23d5ca7251edb734f20e2de3af:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-DateTime-Calendar-Julian
 * [new ref]         3b9043e270bb8f23d5ca7251edb734f20e2de3af -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3b9043e Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild