$ git clone -n https://src.fedoraproject.org/rpms/python-flexcache.git /var/lib/mock/f40-build-2213668-52345/root/chroot_tmpdir/scmroot/python-flexcache
Cloning into '/var/lib/mock/f40-build-2213668-52345/root/chroot_tmpdir/scmroot/python-flexcache'...
$ git fetch origin f3215b5f0bef892fc0dc2f059aa6f941ebbbc37e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-flexcache
 * [new ref]         f3215b5f0bef892fc0dc2f059aa6f941ebbbc37e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f3215b5 Fix sed-patch to remove BuildRequires on python3-pytest-cov