$ git clone -n https://src.fedoraproject.org/rpms/python-jinja2.git /var/lib/mock/f39-build-1442977-32526/root/chroot_tmpdir/scmroot/python-jinja2
Cloning into '/var/lib/mock/f39-build-1442977-32526/root/chroot_tmpdir/scmroot/python-jinja2'...
$ git fetch origin fc015d1bcf201262caa1525455193ca4305418d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-jinja2
 * [new ref]         fc015d1bcf201262caa1525455193ca4305418d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at fc015d1 Disable docs in flatpak builds