$ git clone -n https://src.fedoraproject.org/rpms/aws-c-s3.git /var/lib/mock/f42-build-3340333-44984/root/chroot_tmpdir/scmroot/aws-c-s3
Cloning into '/var/lib/mock/f42-build-3340333-44984/root/chroot_tmpdir/scmroot/aws-c-s3'...
$ git fetch origin 950df50175cd5f1f6eb8f8b2cee273f84d4b00a5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aws-c-s3
 * [new ref]         950df50175cd5f1f6eb8f8b2cee273f84d4b00a5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 950df50 Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild