$ git clone -n https://src.fedoraproject.org/rpms/piper.git /var/lib/mock/f39-build-1469411-33846/root/chroot_tmpdir/scmroot/piper
Cloning into '/var/lib/mock/f39-build-1469411-33846/root/chroot_tmpdir/scmroot/piper'...
$ git fetch origin de635bb0e373d43e303487d9885fba0891c2b520:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/piper
 * [new ref]         de635bb0e373d43e303487d9885fba0891c2b520 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at de635bb Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild