$ git clone -n https://src.fedoraproject.org/rpms/python-botocore.git /var/lib/mock/f43-build-side-110636-59046767-6570621/root/chroot_tmpdir/scmroot/python-botocore
Cloning into '/var/lib/mock/f43-build-side-110636-59046767-6570621/root/chroot_tmpdir/scmroot/python-botocore'...
$ git fetch origin 3afc961dd536dddabe26d7798e480fdaa98d83d3:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-botocore
 * [new ref]         3afc961dd536dddabe26d7798e480fdaa98d83d3 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3afc961 1.38.0