$ git clone -n https://src.fedoraproject.org/rpms/tagsoup.git /var/lib/mock/f41-build-1041899-18994/root/chroot_tmpdir/scmroot/tagsoup
Cloning into '/var/lib/mock/f41-build-1041899-18994/root/chroot_tmpdir/scmroot/tagsoup'...
$ git fetch origin 19b4bcdca4fb7bae62981647e5756d3f8ecffee8:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/tagsoup
 * [new ref]         19b4bcdca4fb7bae62981647e5756d3f8ecffee8 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 19b4bcd Eliminate use of obsolete %patchN syntax (#2283636)