$ git clone -n https://src.fedoraproject.org/rpms/python-botocore.git /var/lib/mock/f39-build-1666853-40804/root/chroot_tmpdir/scmroot/python-botocore
Cloning into '/var/lib/mock/f39-build-1666853-40804/root/chroot_tmpdir/scmroot/python-botocore'...
$ git fetch origin f9c75344b041046128f6e0faa2a7ee8f66d94217:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-botocore
 * [new ref]         f9c75344b041046128f6e0faa2a7ee8f66d94217 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f9c7534 1.31.21