$ git clone -n https://src.fedoraproject.org/rpms/tk.git /var/lib/mock/f40-build-789498-135814/root/chroot_tmpdir/scmroot/tk
Cloning into '/var/lib/mock/f40-build-789498-135814/root/chroot_tmpdir/scmroot/tk'...
$ git fetch origin a07b81db951834ac2f6cdd3c7857ba5312c7efc4:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tk
 * [new ref]         a07b81db951834ac2f6cdd3c7857ba5312c7efc4 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a07b81d Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild