$ git clone -n https://src.fedoraproject.org/rpms/uv.git /var/lib/mock/f42-bootstrap-3462984-45594/root/chroot_tmpdir/scmroot/uv
Cloning into '/var/lib/mock/f42-bootstrap-3462984-45594/root/chroot_tmpdir/scmroot/uv'...
$ git fetch origin 5bbb8257a6638ed0aa7ffe15360c60f36abe2cad:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/uv
 * [new ref]         5bbb8257a6638ed0aa7ffe15360c60f36abe2cad -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5bbb825 Drop patch that allowed mailparse 0.15.x (we now have 0.16.x)