$ git clone -n https://src.fedoraproject.org/rpms/tcl-tileqt.git /var/lib/mock/f41-build-725804-13123/root/chroot_tmpdir/scmroot/tcl-tileqt
Cloning into '/var/lib/mock/f41-build-725804-13123/root/chroot_tmpdir/scmroot/tcl-tileqt'...
$ git fetch origin a6004dbcac2d6d4ff46406b6a781c8949099c3ad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tcl-tileqt
 * [new ref]         a6004dbcac2d6d4ff46406b6a781c8949099c3ad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a6004db Eliminate use of obsolete %patchN syntax (#2283636)