$ git clone -n https://src.fedoraproject.org/rpms/tango-icon-theme.git /var/lib/mock/f41-build-1276924-23150/root/chroot_tmpdir/scmroot/tango-icon-theme
Cloning into '/var/lib/mock/f41-build-1276924-23150/root/chroot_tmpdir/scmroot/tango-icon-theme'...
$ git fetch origin db1952b522d8827374de387cf3b3fe9dda06f649:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tango-icon-theme
 * [new ref]         db1952b522d8827374de387cf3b3fe9dda06f649 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at db1952b Eliminate use of obsolete %patchN syntax (#2283636)