$ git clone -n https://src.fedoraproject.org/rpms/pidgin-birthday-reminder.git /var/lib/mock/f39-build-1503325-34967/root/chroot_tmpdir/scmroot/pidgin-birthday-reminder
Cloning into '/var/lib/mock/f39-build-1503325-34967/root/chroot_tmpdir/scmroot/pidgin-birthday-reminder'...
$ git fetch origin 1457f61de5699a3dcea38c149137656b34c967ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/pidgin-birthday-reminder
 * [new ref]         1457f61de5699a3dcea38c149137656b34c967ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1457f61 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild