$ git clone -n https://src.fedoraproject.org/rpms/python-blosc.git /var/lib/mock/f39-build-2140103-50845/root/chroot_tmpdir/scmroot/python-blosc
Cloning into '/var/lib/mock/f39-build-2140103-50845/root/chroot_tmpdir/scmroot/python-blosc'...
$ git fetch origin cc348ddb015a558d3a9a1a316e21f9102b7ef999:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-blosc
 * [new ref]         cc348ddb015a558d3a9a1a316e21f9102b7ef999 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc348dd Convert license tag to SPDX