$ git clone -n https://src.fedoraproject.org/rpms/mingw-jimtcl.git /var/lib/mock/f41-build-1037579-18804/root/chroot_tmpdir/scmroot/mingw-jimtcl
Cloning into '/var/lib/mock/f41-build-1037579-18804/root/chroot_tmpdir/scmroot/mingw-jimtcl'...
$ git fetch origin 2fcbda6c117762bb6147f68ddcb811870413598d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mingw-jimtcl
 * [new ref]         2fcbda6c117762bb6147f68ddcb811870413598d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2fcbda6 Eliminate use of obsolete %patchN syntax (#2283636)