$ git clone -n https://src.fedoraproject.org/rpms/python-awsiotsdk.git /var/lib/mock/f40-build-2633693-65955/root/chroot_tmpdir/scmroot/python-awsiotsdk
Cloning into '/var/lib/mock/f40-build-2633693-65955/root/chroot_tmpdir/scmroot/python-awsiotsdk'...
$ git fetch origin 367ae7cd62391c992e9be94b1d0f1d666fe0013d:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-awsiotsdk
 * [new ref]         367ae7cd62391c992e9be94b1d0f1d666fe0013d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 367ae7c Update to 1.21.1 rhbz#2267109