$ git clone -n https://src.fedoraproject.org/rpms/aws-c-compression.git /var/lib/mock/f41-build-856862-167791/root/chroot_tmpdir/scmroot/aws-c-compression
Cloning into '/var/lib/mock/f41-build-856862-167791/root/chroot_tmpdir/scmroot/aws-c-compression'...
$ git fetch origin 76c5e744435474e1c1efed2491c267f522e461b5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aws-c-compression
 * [new ref]         76c5e744435474e1c1efed2491c267f522e461b5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 76c5e74 Update to 0.2.19 upstream release