$ git clone -n https://src.fedoraproject.org/rpms/zlib.git /var/lib/mock/f40-build-2225504-52830/root/chroot_tmpdir/scmroot/zlib
Cloning into '/var/lib/mock/f40-build-2225504-52830/root/chroot_tmpdir/scmroot/zlib'...
$ git fetch origin 1edfcf16dac9eb907416358df81404a7837024f1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/zlib
 * [new ref]         1edfcf16dac9eb907416358df81404a7837024f1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1edfcf1 Fix integer overflow in zipOpenNewFileInZip4_6